1FST2M6 is correct...
I just trucked a 96' 3.4 DOHC up from FL this weekend. I'll try to give as much information to your questions as possible.
Everthing below is from research I've done over the last 6 months or so on the DOHC swap and have found out from Micheal Smith and terryk out in California, 3400fiero and lowcg.
getting the 285hp back will cost some dough...
Yes, from what I've been able to ascertain, "most" of the detuning was in the CAM's. Eglin has mentioned that they may be able to do a grind job on them, due to "no one" making a performance grind on that cam. The lifters "may" be able to take up the slack of a grind job, but if not, your going to have to purchase aftermarket ones for $20 X 24, ouch..
Micheals DOHC had the revlimiter removed but started to valve float at 7200 rpm. I'm sure the factory springs weren't intended for that level of reving. I heard someone mention a properly tuned DOHC revving to 7800 rpm !!!! some time ago. May have been in a W-Body however...
As I'm just getting into the swap, and I'm no gifted mechanic(software engineer), the right deck hinge needs to be trimmed, removing the hinge spring. This can be remedied with Rodney dickmans deck-lid struts.
There are a few mods and gotchas primarily hoses and cables, throttle, coolant, etc... I'm still researching the 3.4DOCH swap kit from ACE to determine whether its really necessary or not.
The biggest concern and issue is the ECM and harness. The fiero computer has no chance at running the DOHC, so break out the wiring diagrams for both cars. the 96' & 97' DOHC is OBD II while the 92' - 95' are OBD I. As per Micheal Smith's recomendation I'm going to use a 93' stickshift ECM to run the 96 engine with a memcal soldered on to allow chip programability(thanks terryk & micheal!!) to keep the stock gauges and remove the revlimiter.
The 96' DOHC is rated 220hp and 220ft/lbs at the crank,10hp and 5ft/lbs respectively, over the previous engines due primarily to modified intake runners and the MASSIVE OVAL exhaust ports in the block, approx. 2.5" wide!!
Expect the typical maintenance with the timing belt.
If your going with a manual, stay with the 282 tranny, they may not be "rated" for that much torque, but the 284 is STOOOOPID impossible to get parts for, much less locate one still intact, trust me, I researched it over and over and verified it with Micheal Smith, they don't make parts for the 284, period, zip, zilch, zero, remanufacturing through Getrag is the "only" option. You can replace the 282 two to three times over for what it costs to rebuild a 284. Plus the 284 has taller gearing for economy. We don't put 220hp engines in fieros for economy...do we...
I'm also going to take the time and do it right at the flywheel and purchase an aluminum 88GT flywheel and kevlar clutch from FieroDave. Should be a nice rev machine when completed.
Strut tower: That's where ACE's kit looks attractive, I've talked him out of the wiring harness work on his kit down to $1300, but that's still a chunk'o change. His kit includes provisions for properly mounted strut mounts, hoses and fuel lines. I'll try and talk to Chris West about his strut setup too. I'll try and mention to ACE the kit less the motor mounts and cradle bushings and see what I can get the cost down to.
I'm trying to document this swap as best as I can and add it to the fiero.cc/fiero-tdc site for everyone here. I'm not one to jump head-first into anything so I'm sure I'll be holding 1FST2M6 back at every corner he helps me on... 
hope this helps...
marc
[This message has been edited by msweldon (edited 11-13-2000).]
[This message has been edited by msweldon (edited 11-13-2000).]
