what is the best way to increase hp and acceleration in a nissan 350z. Lowest priced also, and by how much hp. Would a performance chip be helpful or turbo kit. chips on ebay are $70.

for example this turbo http://cgi.ebay.com/ebaymotors/T3T4-TURBO-KIT-INFINTI-350Z-G35-G20-M30-J30-Q45-I30-I35_W0QQcmdZViewItemQQ_trkparmsZ65Q3a12Q7c66Q3a2Q7 c39Q3a1Q7c72Q3a1171Q7c293Q3a1Q7c294Q3a50QQ_trksidZ p3286Q2ec0Q2em14QQhashZitem414746df69QQitemZ280368 701289QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessor iesQQsalenotsupported#ht_3886wt_1197

good or bad?