ive got a brand new natra rad for my ute, v8 copper 3 core, i think it was 450, but i didnt have another 3 core to fix, its huge, very thick, with falcon twin thermos, itll keep my little commy motor cool seeing as theyre factory pissy little aluminum/plastic rad, i think only 2 core, i was going to use aluminium but after reading up a bit on them there not so good, mainly getting eaten out becasue power running throught them from bad earths, i reckon if the original rads lasted 30-40 yrs why change? i could have got a smaller 3 core put into my 2 core rad but for not much more i got a brand newie, less than 100bucks extra i think, i got mine from Tony Reakes in dubbo, ill be going through him again when i get a new rad for my sedan, i think he was 15bucks more than the other bloke in town, but the other bloke didnt have very good customer service and wasnt particularly helpful