Really?? You must not be too bright...or know much or done much in the smblk world of mopar,try a la engine 360 with same combos and see what that does for your jeepster,the 360 magnum in my dakota was torquey for what it was and the weight of the RT[clubcab] was running 13.80's-90's when I sold it ,this being after the rebuild and computer upgrade and true dual exhausts and different cats,couldve spent a 1/2 of the money and gone faster and better fuel economy with an la engine even with a 318 la..magnum heads are junk 1 in 5 maybe more are cracked and most people never know it,dont believe me inquire at a salvage yard or machine shop and get educated,if you think your jeep is a bad *** then you have no clue what bad *** is,you are probably a fan of michael jackson and pee wee herman...all Mopars have potencial if you throw enough money at it but some just respond much better, and being old school have seen the difference over the years and I will take the LA engine over the magnum every time, I will say the magnum head was a good design just the factory ones were junk,aftermarket ones had better features not prone to cracking...and if you think 'killing' 03-04 mustangs is such a feat then you really are a beginer and you make me laugh at your ignorance...doo dah...ding ding...