the 91 may or may not have the long nose cam
you could just swap on an older t-cover to save time and work
if you go aftermarket cam,get a long nose cam and run stock ecentric and mech pump
I orderd up a lunati VooDoo roller for mine and got the long nose for mech FP
the 91 should also have oil thru lifters and hollow PR and still oil thru the block/heads to rockers(mine did)
so its oiling both ways with no problems(stock engine did also)
thats 1/2 way to a magnum head swap(oil thru lifters/hollow PRs) for a pre-mag hybred later on
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