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The number on my engine is "305C10". So based on this new information the engine in my 1978 Jeep is a 1983 258 manufactured on May 10 1983 and should of had a 2v carb. But when I bought the Jeep it had a 1v carb. This proved my suspicion that things may have changed in the 20 plus year period. WOW <img src="/forums/images/graemlins/kewl.gif" alt="" />
Thanks again you guys!!!!!!

78 CJ7, 83 wide track axles/Dana 30 Front W/ OX Locker, Model 20 rear w/ one piece shafts(welded tubes)/Detroit Locker, 4.10 gears. 4.5" spring lift with 3/4" shackle lift. 35x12.50 BFG MT, 4.2L, Weber Carb, K&N, T18,Scout Dana 300,Warn 9.5ti