You want 2 roof spoilers?
I've got one out at the farm. Dunno how good it is. The van it's on had an underbonnet/front of cabin fire about 10 years ago and it's been outside since. I'll see if I can get it off the body.

As for advice, Find yourself a HJXZ sedan/wagon/ute that has a V8 and all those bits you want. It'll work out cheaper in the long run and you can sell the bits you don't need.