I am after a memcal tune for my VT roller cam block before I actually take it to get a proper re-map.. specs are, crane cam part number 888251, its got crane 1.65 roller rockers, crane push rods, crane t-bar lifters, jp timing kit, standard rebuilt bottom

I've looked at the specs of that cam to be honest we wouldn't feel comfortably supplying you with a memcal to suit, even if it's for the interim. I wish I could say yes, but from experience mail order tunes for such engine builds don't work well or don't meet people's expectations My advice would be to talk to the workshop who will ultimately be doing the custom tune as they should be able to supply you with a run in tune to suit.