no problem fitting any SBC in a TF truck, but 'bigger' isn't necessarily better, the 283 will do anything you ask of it, and last longer than a 350 .... I'd pass on the 400, but it's your truck and your money
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics
