how much will it cost.....
98 ta a4 65k miles hooker long tubes and cutout
New cam ~390-400 + Shipping
New Springs (918's) ~190 + Shipping
New Pushrods ~ 100 + Shipping
New Titanium Retainers are optional ... but would run about 170 + Shipping
You can cut costs by buying a cam package from Thunder also.
Since its a 98 you'll probly want to go ahead and replace the oilpump (I didn't look to see how much that was as I didn't get one for my cam). And a new timing chain (ls2 ~ 35 bucks from SDPC)
cams are easy to install...do as much reading as you can and take your time doing it. i'd recommend the Comp 918s...you can use your stock retainers and pushrods are up to you. i'm running the stock pushrods and have had zero problems. i'd say in all youre looking at $700 after gaskets, fluids, etc. but that depends if you buy a new cam or if youre interested in mine, lol!
-mike





