#1 They say the H23 is better to run boost on rather than the H22...if you only have 2k you can build your own turbo...you will need more than 2000 dollars to get the full effect of the H22...so i would turbo the H23
#2 Thats the way the gauges are...but you can buy after market ones
#3 Tailights are all on you
#4 Cant find the wing you speak of?