on my quest to install a 6.2 in my 93 astro i am having a hard time choosing a transmission the current trans in the van is a 4l60e i also have a 700r4 trans but what i think i am understanding i cant use either trans because they are for a 4.3 gas engine so what are my choices from here i dont tow anything and most of my driving is highway any info would be appreciated thanks