Since there seems to be some curiosity about the 4.3 motors, maybe this will be of interest.
This is from S10forum.com
A "by the numbers" history of the 4.3. Production changes, what works with what else, etc., etc.
http://www.s10forum.com/forum/showthread.php?t=131868
Performance part numbers.
http://www.s10forum.com/forum/showthread.php?t=114235
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Raydar
88 3.4 coupe...........
Coming soon...
88 Formula, presently under the knife.
Read Nealz Nuze!
[This message has been edited by Raydar (edited 10-12-2004).]