Tower still has stuff from the 80's, strange shop. you can probably get the original grasshopper there. So this new force, it's a 5 or a 7 port. Is the bottom end enough? yo might try the 9853 ss novarossi pipe with the short round header. It will give you enough punch, and the short header won't limit the top end, heck that setup works for every engine I've run. the dynamite 053 will work and it comes with the short round header anyhoo....Also try the mc-coy mc8 plug, it seems to be a medium hot plug that will last a little longer than a dedicated hot plug. But if it's a 7 port you might be right that hotter plug will keep it lit up better and make it easier to tune, maybe. I love the all black case an hardned crank. Sweet for 175, nice comeback force...