Here is my ebay ad for the oil restrictors
Just got done with another batch of them will be ready this coming week.
Above Added: Mon May 28, 2012, 9:52 am EST
Price is 25.50 + 4.99 shipping total will be $30.49 shipped lower 48 states, others call for international shipping rates
Above Added: Sat May 26, 2012, 6:00 pm EST
Hoffman Performance Products is manufacturing these oil restrictors for the DART SHP Blocks. These restrictors are designed specifically for the main oiling system to reduce the amount of oil flow to the top of the engine, reducing the risk of evacuating your oil pan during high rpm use. This kit includes 2 restrictors with .090" I.D. hole. These are manufactured out of 6060 T-6 Billet aluminum on a 5 axis machine. You get an extra O-ring included with the set. 100% manufacturered in the USA. We sell these with the cheapest price on the market, you will not find them cheaper than this right here!