A Dutt neck is a worthwhile upgrade for a street TR. I have seen a GN with a TA49, Dutt Neck IC, 3" DP and alky go 11.25 with ported 8445s. The gain would be more noticable on a stock turbo. But to buy the neck($70) and to have it welded(~$125), its over $200. A good SLIC will set you back $750 or so. And even with the Dutt neck, its still a stock 10-row IC. I gained 2psi of boost just by porting the stock turbo, IC, plenum and adding a PowerPlate. It cost me nothing, just a few hours in the garage with some friends.
Just my .02 on it. I'll be going to a SLIC when I can, and planning on running either a 61 or 62. We'll see.
