the instrument cluster yer talking about is NOT gonna be cheap. my dealer told me the 150mph unit LISTS at 1000 BUCKS !(yeah hes got a listing, i saw it). he can do a little better for me being in the parts biz, but not to expect miracles.
thats because youre getting the WHOLE assembly and not just the speedo. tach, gas n temp gauge included. the stock ones for our cars run 650 bucks at the dealer, which is CRAZY. even that OEM PARTS site listed instrument clusters for like 550 bucks.
(280905 Electrical, instruments & Gauges, instrument Cluster, Intrepid, W/Autostick List Price $635.00 Your Price $552.45 )
i dont know what you were looking at that was only $160 sURF, but i dont think it was the guages. for 550 bucks + tax, i think id rather get an exhaust system and a cold air intake on my car than spend that kinda dough on something thats not going to do much but show me how fast i SHOULDNT be going

thats just my 2 pennies worth.