x2
There are several people here who are having good luck with the HEI you bought CJ, but I'd say a sizable group of users have had multiple failures. Some catastrophically, and some almost immediately.
Never heard a bad thing about a real DUI though, other than it's initial price. I guess you get what you pay for is true enough here. I can't speak from experience, but it sounds an awful lot like the DUI is made in the USA. That would at least explain the price, if not the quality too.
Davis is the originator, while Proform and ProComp are the copies. I think there's one more too, but it's hard to say since there are a lot of people selling the inexpensive ones nowadays. Even Mr Gasket/Accel/Mallory makes some now too. Don't know if they suit our applications too, but I've seen them. Don't know anyone who's used one though, so can't say for their quality. Love the rest of the items in Accel's and Mallory's lineups though, so there's that.
I hate to say anything about Tom's products though. I like them and they have a well deserved reputation as honest folks selling good products. And any of the vendors will be looking for good deals on Bronco products to sell to their customers to gain some advantage in a sale. So maybe give them a call to see if they've had any more than the usual troubles with a product, and ask what their warranty and/or return policy is regarding this product specifically.
I bet they'll tell you the honest skinny about it, and you can make a better informed decision as to using it.
After all, the people that are having good luck with them, absolutely love them!
Let us know what you decide to do too, so we can add it to the "official casual early bronco database of handy dandy information for future reference" we keep compiling. ;D
And x2 on the welcome too!
Paul