Ive been thinking about getting a 2 aluminum wheels to go on the back of my el camino for when i take it to the track. Right now it has 14 inch corvette rallys with cordavon grand prix tires. I was thinking about trying to find some 80s factory aluminum 15 inch wheels off a camaro or s10(because they would be cheap) does anybody know which wheels I should look for as which stock ones would be the lightest? Or is the weight difference on factory thick aluminum wheels minimal compared to steel? also should i maybe even try to find 16s or stay with 15s? And I would mount a set of drag radials on the wheels.