I have seen an electric one on ebay. They promise 25-40 HP gain, with a stock setup, and all you have to do is hook up two wires
Really, The new SQ from Vortech, the Novi 1000 or the procharger P-600 are the entry level blowers. All can be had for less than 2000$. Look in your local trading post or Ebay for a used setup for cheaper.
Glad the T_5 swap worked good for you.