There was an aftermarket pump..
Think the brand was melling, had on caused all kinds of havoc. Along with the high pressure oil piston kit.
Steve, the freak, built a super vee spec motor for me. And I ran the car at heartland park Topeka at a PCA event... Damn, that was a fun motor, ran like a rotary, no torque curve, from 2000-7250. Limited by msds, 6AL...
Filled the puke can, overflowed it... Cracked a cooler/fitting/adapter....
Made oil come from every oraface. Valve covers, oil cooler seals, oil fill seal
Poor Denny lapping behind me in his '89 turbo look. 23k miles, concourse car.
Sprayed a few other cars as wheel that weekend. Rather misted
Hence my 71' track car was known as the "914 from hell"
My apologies to those that I sprayed for the hours that you spent with a qtip, re-detailing your car.
Yes it was fun, but I personally think that using a melling or other high performance oil pump is not worth the aggravation.
Now, if I was running a bus in a high torque low rpm application in the mojave desert, that would be a completely different application, and that pump could work for the 10 extra quarts of oil to keep everything cool.
My 2 cents. Your mileage may vary, depending on your driving conditions, octane and driving style....