08 jetta bypass module

No one makes a no-key-required module that I've seen. If he wants to buy a European car, he'll have to also be willing to pay to get another key made. You can explain to him that you can grind/cut the shaft of the key, so even if a thief finds it under the dash he can't use it to start the car.....that might make the customer feel more comfortable. Those cars consume quite a bit of extra time to do, as well as you'll probably want the CAN-SL2 to make the locks easier, as well as a key-in-the-box module for bypass. $400-450 for basic remote start/keyless/trunk isn't unheard of........I don't know, maybe $600 or so for a basic install on that Viper combo? Maybe even $650? I would call a few other local shops in your area, and ask them for prices. I'll bet most/many will be afraid to touch it, or will quote really high prices.

If you can still get one, the "never fail" DEI 556U was the best, but you must wire it Euro fashion, i.e. discard the antenna loop and as Chris says, get a basic key (valet) made, i.e. no remote fobs and saw off the shaft.