got a deal on a 1995 c2500 5.7l 4l80e transmission 14bolt sf rear with 4.10 .i want this as a tow truck for my travel trailer.its a tbi injection,i find it doesn,t feel that strong ,can,t hook trailer for test its in kind of snowed in.i,m used to running my turbo 6.2,and thought i would feel a big seat off pant difference. is that normal may be a good tune up would help.i don,t have to keep the cat but find it noisy when they are off,any thing a guy could do to wake it up more? on the door thers a sticker that says not to tow in overdrive,thought a 4l80e could do it? truck is in great shape only113000km(70000miles).