Those sure look like BB 1.5 ratio Indy rockers. The intakes are .850 offset and the exhaust is just standard. They have the offset exhaust like a BB. Those were made by Dove engineering for Indy but they no longer make them. Harland Sharp, T/D and Jesel still make them in several ratios. Really might have to play with the spacers to get perfect alignment on the valve tip.
Todd