rza36ch

Alright guys im looking at buying a 2000 TA with 130,xxx miles its going for about 8,000. I want to spend about a total of 13,500 I was wondering what you guys think 402?408? 383? and also include how much the average labor will cost and will I need any extra parts besides the shortblock? for example will the intake manifold and the computer and crap swap over from the ls1 thats in there? give me your guys total estimated price also I want atleast a minimum of like 450rwhp on all motor when im done