I believe it did drop temps by a few degrees (nothing drastic), but I really went to a Rod Davis for having no plastic tanks. Keep in mind that I went from a new OEM radiator to the Ron Davis, if your current radiator is old you will see some extra cooling.
Have thought about seat covers for the Scheel-Mann seats,? This is what I bought for mine and they are exceptional quality! they even allow the use of the bottom cushion lift up feature so you can access things under your seat!
They even offer CUP HOLDERS...
I can't say exactly. as I my rig didn't have stock exhaust when I bought it. But I would guess that it would need custom work as it has no provisions for a CAT...
and on that note, I dont think you will be able to use a cat with it, that is why Mr T moved the exhaust outside the frame.
There...