Cavebull, the TBI motor / ECM doesnt know 4 cylinder/6 cylinder/8 cylinder if it has the correct prom. The wiring is the same, just larger injector/TB to correspond to larger engines. Swapping a V8 for a V6 in astros and S-10's is common place and no major programming required other than to tell the ignition module which engien (4, 6, or 8) and have a large enought TB/injector pair.

as for EFI on 235's, there are a few TBI swaps on 235's. See Diceman's and Drummin52's conversion

https://www.stovebolt.com/ubbthreads/ubbthreads.php?ubb=showflat&Number=438357

https://www.stovebolt.com/ubbthread...;Main=73318&Number=525314#Post525314

As for contacting someone to re-program the ECM, contact JET performance (http://www.jetchip.com/) or the guys at street & performance (http://www.hotrodlane.cc/) I have used them both and had great results. You may also want to try Westers garage
(http://westers_garage.eidnet.org/) I have heard good things about them.

The problems we face today can not be addressed at the same level of intelligence we were at when we created them - Albert Einstein Or with the same level of $ - Me