whats the best after market throttle box to go with? here is the skinny on what i got . started as a 98 TXT now up graded to ac Navitas 5 kw 600 amp with a 156 ah battery. plum quick told me to get a 48 volt wire harness and a Fand R DAsH switch wondering if that is right.?? 48 volt big solenoid, starting to put everything together and I wondered what about the throttle box do I need to upgrade it also? or the old one be ok Thanks guys for alll you good advice .. I buy the beer for any good advice