c20 needs help!!!!

[walmer1968]

hey! new ta the fourms so dont really know how anything works. im looking some help with my biuld i have a 1968 c20 i will not down grade stuff to c10 parts i use it as a truck and love my 8 lug. so here is my issue i have a strong running 350. but i dont like the sbc or bbc chevys unles 348/409 or the 427 so short of doing that i was looking to do another motor tranny swap i still have my I6 292 but im not sure if i want biuld that or go diesel. im looking to do something crazy different. a one off truck but not break my bank. (im 18 and dont have too much money but im pretty well set) i wanta go manual but i mite to an auto if the price is right. I am going to biuld the motor. ive thought bout doing a 5.3 w/efi but all the wires kinda scared me off so ive been doing parts lists for a 292 probly turboed but i think i wanta go diesel. so can anyone help has anyone played with the 6.2 or 6.5? the truck is not a dd but if it is possable i would make it one. im thinking if its gas it;; be a friday night get in trouble truck if diesel maybe a dd