As of 2015, stores sell ProComp aluminum heads include CompetitionRacingSupplies.com and HugesEngines.com. Both of these stores sell the ProComp aluminum heads at their online stores.
CompetitionRacingSupplies.com offers more than 10 styles of ProComp aluminum heads. This online store offers customers an advance search feature to narrow down the options. Each item has a photograph, name of the item, part name and cost of the item. To purchase aluminum heads, customers click on the item, and then click Add to Cart.
HugesEngines.com offers the ProComp aluminum heads with the needed parts, including valves, springs, locks, spring cups and head bolts. There is also a billet steel hold-down kit that comes with studs and nuts. This company makes adjustments if the valves are too long or if the head diameters are off.