The Scorpions that I listed are $313.00. I wouldn't buy a certain brand because they are cheaper. If one of these rockers fall apart and the ball bearings get into the engine your going to be out way more than a few bucks saved from some off brand. I'm pretty sure military specs on marine engines is 500 hours, I could be wrong but I think thats what I was told. These are the rockers used in all the gas inboard engines used by the military as well as all of Merc's blue engines. Remember you get what you pay for!

Scorpians look like the way to go for $250, THERE IS A SET OF GOLD NO NAMES GOING FOR 140 SHIPPED MUST BE CHINESE.
Theres also a set of Procomp for around $150 on ebay, anyone aware of this brand, i know they sell truck tires..

LOL ITS LIKE TOILET PAPER, YOU GO WITH THE CHEAP **** AND YOUR ASS HURTS FOR A WEEK

Stay away from pro-comp, China
I just ordered another set of Scorpions. I replaced one engines last year. I run the 1.7's on the exhaust and 1.8's on the intakes. These are at least 10years old and I think it is time to replace them. I paid $234 from Summit I also ordered some Dart adjustable push rod guides.

These are the ones that I'm running. Nice looking engine there Rookie!

I thought Crane went bankrupt and closed down, but it turns out it must have just been Chapter 11 cause they are still in business.

If anyone needs a set of Scorpions 1.8 ratio like new I have a set for sale.

I love engine porn in the morning - lol

We placed the Dart adjustable guide plates on my buddies airboat engine this weekend. Nice high quality part where the 90 degree bends were broke with a radius die to increase strength versus the factory guides formed with a knife die incresing the stress in the break. Guess where the factory one failed

I was looking at the Harland Sharp 1.8's what do you want for the Scorpions?

How does the rpm Air Gap work with 500 Hp? Is it to much manifold?

You running an Air Gap or a Weiand stealth?