I think that this should be a fairly easy swap. To address the hood clearance issue... i dont know how tall the chevy is compaired to a 302 but mine has about 3-4 inches from the top of my big A$$ aircleaner to the hood. I would go with a 8.8 for your swap... I got my l/s 3:73 for 45 bucks pulled from the local junkyard. As for the driveshaft... depending on what tranny you use, go to the junk yard find a driveshaft with the input shaft (i think thats what there called... the thing on the driveshaft that slides into the tranny) that you need to fit your tranny. Cut off that end leaving like a foot of driveshaft attached then take that and your stock ranger driveshaft to your machine shop and just tell them you want that put on the end inplace of the stock ranger one. I just got mine shortened and new universals put in ( could have done it myself ) for $58.50. As for transmisions you could go with a th-350, 700r4 for o/d, or you could use a late 80 early 90 camaro tranny couldnt you... i believe those came with t-5's just like the mustangs did. Shifter doesnt sit that far back... For the tranny crossmember your going to have to move it... just grind through the rivits holding the mounts onto the frame, then move them to the new location drill new holes and use grade 8 bolts... atleast thats what i did. For a radiator you can just order a universal griffin from summit for like $180 bucks 24' wide by 16' high... they work great, my truck runs at 150F. Suspention wont be a problem, if its a 2wd truck you wont mind the 1" or so drop in the front. One more thing, make sure you fold over the lip where the firewall meets the trans tunnel