hey so I'm about to buy a new 1jz head(ported, valves oversized, ect..) and I'm looking to pick up so 2jz cams to throw in it. I found some but they have a bit of rust on them. I've been reading around the internet and it seems many people have cleaned rusty cam without any problems. so what do you guys think? will this be fine? and how much should I pay for these?