Hey I wanted to know if i bought an 02-03 seville sts with 40000 mi or less can i beef up the motor to 400+ hp. I have a 1998 sts and its quick but it states 0-60 in only 6.9-7.2 secs. Id like to get in the 5 sec range to compete with the infiniti g and m. I have driven a bunch of different cars but nothing compares to the seville(well except the new STS) i drove a 300 c and it is a bit more powerful but control at higher and lower speeds is not as good as the sts. i drove the lexus e series and its just a smoother toyota but corners arent controlled as well as the cadillac. the infiniti is almost as good as the STS on the highway but it doesnt absorb the road as well. ive had my 98 STS up to 128 and felt like i was going slow but didnt want a ticket so i didnt try the max.My wife went to 118 and she was completely confident (she never went past 80 in any other car because she felt scared. im waiting for cadillac to get the v-series past 500 hp before i spend more than 50k on a car, so i figured id stick with a 18k car and beef it up if i can.If the motor is doable is the suspension capable of taking the added torque and twist, also will i be able to reprogram the pc to work with the new power and increase the governer?