I also asked if they needed to be rebuilt. For 50 bucks it's worth a shot. They should fit 15" wheels as that is what most roundy round cars use.That will be perfect then.
Dynalites are 1.75 and they work pisser.
they are wilwood brand but I have found no part no. or other markings. They are a larger caliper that looks to be from a track such as Bristol. They were off of a Busch car. They could use a set of seals I'm sure which are $8.00 per caliper
:rolling: :rolling: :rolling: :crazy:Those are old GT or GN calipers. They are VERY wide and they will NOT fit behind a stock wheel, the nascar boys have some serious brake hub offset and the wheels have massive caliper clearance. You will need at least half an inch of spacer to be able to run those. Keep in mind, they are for sale for a reason, probably burnt up seals, burny up pistons and those stainless pistons are expensive, especially the thermlock ones. Looks like they are a 5.25 GT lug mount, most calipers used in aftermarket are 3.50" mount. You will need special brackets for these (just like the brackets I had made for mine)