manual trannies in 80\'s and 90\'s GM trucks, NV4500 conversion Just curious, what manual transmission came in half ton trucks in 88' when the new body style emerged? Was it still an SM465? Was it a NV4500? If not, when was the 465 dropped and what was it replaced with? the reason I'm asking is that I'm converting from my soon to be dead 700R4 in my 88 blazer to a good ole dependable 465 pretty soon. but one thing I will miss is OD. so I was thinking of later on (couple of years) changing out the 465 with a 4500 (if that is practical or even possible). So what GM trucks came with them and what is involved in getting them to fit in an older body style truck or blazer? thanks.