I'm having a new motor built for my 68 TA clone track car. The new motor will be a 347 stroker dart block with AFR 205 heads. I running a toploader 4-speed with modified z-arm clutch linkage, manual steering and manual brakes. On the old motor, also a 347 stroker with victor JR heads I used Hooker Super Comp 6111 headers with 1/5/8" primaries and 3" collectors. These fit fairly well with minor clearance issues. On new motor, I want to run 1 3/4" primaries into 3" or 3.5 " collectors and also use the wider flange bolt pattern. Hooker doesn't sell anything with 1 3/4" primaries that I can use. FPA has headers that will fit except for the z-arm. FPA says I would have to convert to hydraulic clutch setup. I see Hedman has a few that may work but I'm unfamiliar witth these. Any suggestions?