If you want it's fairly easy to convert a 6 cyl. Unilite to 4 cyl by just changing the cap and rotor to get the vacum advance or I can send you the drawing for a collar to fit over the 8 cylinder distributor to fit the block and you just have to attach a 6 or 4 cyl. drive gear. ,
'45 Ford PU 66 Valiant wagon, leaning tower of power. 79 Chevy C10 w/250 02 PT Cruiser Convertable