July Special. Stage 1 plus heads, $65030 Jun, 2016 in Head Hoggers tagged harley / harley machining / Harley Performance / Head Hoggers / head porting / specials by headhoggers (updated 2346 days ago) Stage 1 plus heads. $650.00. *customer supplied heads* Includes: 1.900 in/1.600 ex, seals, cleaning, extensive porting, surface and assemble. TQ good up to 120’s and HP good up to 118’s with proper pipe and tune!