Well they are both good engines, the B5 has got a lot more power than the reedy and runs cooler. And I dont own one but 2 of the guys I race with do and I have driven there rigs,and they both have had them for about 4 months and 5 gallons and already had to rebuild them. The werks will go at least 8 gallons if taken care of. One of mine has 5 gallons on it and it still has awesome compression. PLus the B5 is cheaper. BUt it all about what you like.
