hi, a friend and i just picked up a 90 trooper in sweet shape. its got the 2.8 in it but it threw a rod, and in our search we stumbled upon the fact that you could drop in a 3.4. but im not really sure what 3.4 this is talking about. is this the same as the 3.4 found in lots of the early luminas, or the one found in camaros and firebirds. sorry for my lack of knowledge. thanks for any help!

cone filter, boche platinum 4 plugs, 235/75/15 kumho all terrains jeep tj rear springs and rav 4 rear shocks, rocksport gear 4" front springs, warn manual hubs, 2.25 inch exhaust, no cat, 48" thrush glasspack