Head Hoggers Stage 3 heads in the works with 1.900 in and 1.610 ex. For Corey Harrison with Pawn Stars. 30 Jun, 2016 in Head Hoggers tagged corey harrison / harley head porting / harley machining / Harley Performance / Head Hoggers by headhoggers (updated 3093 days ago) Here’s a set of heads that are in the works for Corey Harrison with Pawn Stars. Follow along to see the end result on these heads.