quick but expensive! lol. I've seen a few lt1's with that set-up. very nice
My reccomendation on the lt1...go for it!
i've got plenty of torque. I've always wanted to put my 383 lt1 into an ol s-10 blazer 4x4 we have. The optispark shouldn't be a problem. Its not a good set-up, but for rock crawling(nut mudding etc) you should be fine. As for the reverse cooling, alot of what that does, is let you run higher compression. Nothing to worry about, just make sure you have the right water pump for it. I don't think the radiator is any different, but i would go with a big aluminum unit.