Jim, those bolts take a 22MM socket. I had received a Stanley "Professional Grade" impact socket set for Christmas and put it to good use on the 3.1 project. This is a set of 11 1/2"-drive metric deep sockets in a handy-dandy carrying case, ranging in size from 10MM to 24MM. Probably came from Lowe's but I expect Sears has something similar. One conspicuous absence in the Stanley set is a 15MM size, so you'll need one of those, too.
You might also consider picking up a set of metric Gear Wrenches from Sears etc. I usd the Heck out of mine and they're invaluable for getting into those xtra tight places on the 'ZuZu.
And BTW, didn't you know that the PNW is the Isuzu 3.4 Swap Capital of the U.S. ??? <img src="/forums/images/graemlins/patriot.gif" alt="" /> And the home of the Non-Rusting Isuzu !!!!! <img src="/forums/images/graemlins/nana.gif" alt="" />
You might also want to pick up a can of PB Blaster penetrant from Wal-Mart etc as those Big Honkin' frame-mount bolts probably need soaking. Several of mine were so frozen to the inner metal spool of the bonded rubber mount that only an impact wrench was able to bust the bolt loose from the sleeve. Try holding an impact wrench up for about 20 minutes while busting away at full force & 110 psi, and you can just imagine the fun time had by all! <img src="/forums/images/graemlins/zombie.gif" alt="" />
You may also wish for a very stout 1/2" breaker bar to get other reluctant bolts/nuts loose.
On your 4.3 TBI, you may have lucked out and got one that has the same type of connector for the T.P.S. Later TBI's have a different plug which requires replacing the T.P.S. or rewiring the plug.
You will need to do mods to the throttle linkage and probably vacuum port connections but all of the GM TBI's are very similar so you shouldn't have much difficulty with the mods if you read up on the existing mods FAQ's.
P.S. on the tight spaces, be glad it's not a GM FWD'r that requires jacking up the motor or removing a lot of stuff just to get the plugs out!!!!
HTH & Happy Swapping........ed
