Yes, it looks like a good package. The cam specs are decent and the package is designed for good torque. It's based on a 350 engine, so on a 400 the torque would be even better. Don't go any smaller than a 750 double pumper.
I have always prefered Holley 850 and Victor Jr. combos. The dual plane intake would be good for a truck application.
okay, thanks. the stock rotating assembly looks good on first inspection. as long as it is in good shape would it be okay to reuse with the holley kit, and if so what are its limits? i found an Eagle ESP assembly that ive heard is not bad, but if i dont have to spend the money id rather not. it is not going to be a race motor, after all