Real world Engine opinions, sbc vs ls swap

[greengrenade]

Whatsup guys, i never really posted on here much as most of my activity was over on the h.a.m.b forum and my truck was originally going to be a traditional build. Well ive turned the tables on my build direction

I have a 59 apache shortbed stepside that originally had a healthy 350, th350 and 10 bolt with an 81 camaro front clip. I have completely disassembled the truck and after some work on my stock frame which has seen better days, and deciding id like to bag it and go with a modern drivetrain and steering/suspension setup, Ive decided to fab a new frame from scratch. Mustang ii front clip, 4 link rear, bagged etc. ive also decided to change my drivetrain plan. I bought a 4 speed muncie to back up what was to be a hot 355. But now im really digging the idea of a 383 or possible ls swap and either will have a 6 speed manual behind it. This truck will be driven ALOT when its done. I drove the hell out of it when i bought at age 18 and now that im 22, id like to do it right so i can run the hell out of it for the next 10 plus years

Who has experience with an injected 383? Im looking for around 400 horse, nothing too wild. But i dont wanna spend an arm and a nut on an injection setup for a 383 if its worth it in the end to pop in a 6.0 ls or similar. Again the truck is a ground up build so wiring etc will all be done from scratch. What are real world mpg numbers, reliability, driveability etc between a tbi or similar 383 and ls2. Thanks for any and all opinions