If you plan to change cams again, then go with adjustable push rods. If not, reuse the stock ones. You won't have problems with adjustment and noise if you use the stock. Properly adjusted, the adj rods work ok, but a lot of people have had issues with them.
If you find your local HD labor rates too high, then try a little outside your area, or try a good Indy. Our local HD rate is $90 an hour...but less than an hour away, it's $40 an hour. A good Indy should save you some bucks as well.
Why does everyone seem to like adjustable push rods? I know many who used them but none seem to read the info on them about adjusting them. I used the push rods that came in the bike from the factory,less to go wrong. I doubt the dealer is going to give you a break on the price for the push rods,so they rack up and you have more maintenance.
It takes less time to use time-saver adjustables. To re-use the stock pushrods you need to remove the rocker covers, rocker panels, and breather panels. This took me about 2-3 hours for disassembly and re-assembly, and it is a tedious job since several of the bolts are very long, Loctited, and are in a position where you can only turn them a flat at a time with an open-end wrench. It's almost worth the $150 for adjustables to not have to go through this ordeal, but once you're done you're done and you don't have to worry about them getting out of adjustment. OTOH, I had Rivera Taperlites on my old Evo that I rode >100k miles and didn't have any trouble with them at all.
My dealer quoted me six hours at $75/hr. using adjustables, which is one reason I decided to do it myself.
Pretty much. With the 575's it has .575 lift and needs the adjustables. I know the 510's do not need adjustables dependent upon head gasket thickness and whether the heads were decked or not, but I don't think you can go much higher than that without adjustables.
With adjustable pushrods you KNOW that you are getting lifter preload set right. With production part tolerence stack up and fixed length rods you have no idea where lifter preload is at!
Got mine done for 2hr labor @ $65.00 per ($130.00) 255 cams ($240.00) and Adjustable P/R ($149.00) and dyno time ($130.00) Less 15% for the parts so around $650.00