So right now I have an 82 J20 with a 360 and the T18. What I am doing is going to be slowly sort of restoring it, some lift and I still want to use it as my truck, not for show. I was looking into engines and a 360 putting high 300's for HP and low 400s for Ft LB, seems to be at least 5K. What I was thinking was should I get mine rebuilt, buy another one or go with a 5.3, better gas but not as high on numbers, I know I can up that. What I also want is to keep in manual, I know I will have to get a stronger driveline to support the extra HP. I have the NP 208 with the dana's 44 and a 60. Any help with the best way to go??? Thanks