What modifications are needed to install the 2 1/8 primary tube headers for a '68, into a 67 A body? Got the info on the merge collectors, thanks. Is anyone selling a TA fuel injection SPX intake with a welded on apater plate for TA TE heads? If not, I am sure TA would sell that manifold and a good machine shop could get the SPX cut and adapter welded on, then some port blending? Hope I got it right.