i can't say about it fitting but if it is just a scar you are worried of any compitent shop can have it sleeved. as for the oiling i've not heard of anyone having any trouble in that department open the passage between the pump and filter to 9/16" same goes for the passage from filter to the galleries bush the lifter bores and you are on your way stock setups (this my opinion only) were not set up for much over 6k rpm. i would say there would be a swap kit for your application

p.s. when / if you start putting this beast back together get with Paul Kane he frequents this site about your oiling he is the guru of the 385 series oiling.