We cut these rings with the latte 4 at a time to save costs
Next we have to fine tune each ring one by one.
Every set is then numbered to keep track of which side is going to face the rim (3/8" ring) and which side is going to have the seat for the chamfered nuts (1/4")
About the 16.5" alum rims.
IT CAN be done.
Due to different types of rims (talking about the lip of the rim)
it is nearly impossible to fabricate a "one size fits all" kit.
I can build both rings with 6061 T-6 alum for you, but you would have to deal witn the welding.
I can do the welding as well but shipping your rims would be quite expensive...
This steel kit is designed around the 8" wide OEM rims.