Best Budget Build Motor

There is another option now that I think about it. I would have to buy the 360 off my friend and I know nothing about it. My 318 holds good oil pressure but it does have one issue. It smokes if it ides for a while if I remember correctly wouldnt bad valve guide seals cause that? If so I could pull my heads new valve guide seals clean them up gasket match ect. Then put it back together with arp head bolts and good gaskets. I would probaly have 200-250 dollars in that. Then I could spend roughly another 1000 with what I have laying around and boost it I know the magnum pistons would handle 10-15 pounds.