I have a 2006 flhx fuel injected and I have the chance to buy a 2008 flhx motor and transmisson. How much difference is there in changing out my 88 ci for the 2008 set up 96 ci Will i need to purchase to do the swapping

 

Strange question! For relatively little outlay you can convert your TC88 to a 95" or even larger, for much less than the other engine/trans is likely to cost. If you want to improve the performance of your 06 there is much you can do with the cash that's burning away in your pocket!