Waverider pulleys on top, Syclone on bottom. Anyone know why they are so different?
The Syclone is a Buick V6 Turbo ( Grand National ) engine not the 4.3 , close enough for 1/25 scale.
The other is a 4.3 out of an S10 . The 4.3 had many different brackets depending on what GM installed the engine in.
Spent a few day's looking in the bone yard for my buddies 4.3 conversion .
Keep on rolling you are doing a good job .