i'd start here, ive got the clifford headers on my 292
http://cliffordperformance.net/
http://www.inliners.org/
http://stoveboltengineco.com/
summit has some pistons and cams and comp cams has some cams too they may be 230/250 cams though they will work except for the fuel pump lobe wont line up, u will have to convert to electric pump i believe.