Well don i dont know what to tell you I like both i have a buddy with a 67 loves it quick spool if you want bigger go that way same here i figure my car will someday have pt88 ,but that just me,also one thing i will say is you better have a strong bottom end ,if you go with a 67 this is a very wicked piece and I truly believe it will find your week spots ,so make youe engine worthy of the challenge.
just my 02
randy