I would suggest getting what I purchased for my turbo is the clifford avantguard 4 alarm with manual transmission remote start and every option available and even a built in turbo timer (best clifford makes for only $380.00 on ebay new!)
I can't wait to install it just help cut down cost on turbo timer especailly if you need an alarm too. Just my two cents Later JOey

99 SVT #198 blk/blue Spec 3/quaife/stage 2 shafts T3/T4 fully built 3.0 ported heads water injec./intercooled 13.2 @ 107 mph clifford alarm and turbo timer koni struts H&R springs intercooler for sale