I can't weld it on I don't think, it's some sort of alloy? It came with a little steel seat that you weld onto the strut and then the coilover sleeve just sits on top of that.
I'm not sure what I'd pay for a 4AGE from the wreckers, I didn't ask. But I think it would be easiest to buy one from there so that I could get the loom, ecu, and everything to go with it. Either that or I could just buy a complete FWD corolla with a 4AGE in it, I see those for so cheap sometimes!
ooo0 that 20v seems pretty cheap. I might look into what's involved in doing the 20v conversion.