i have an 87 gta that has digital dash 5spd 305 tpi i want to swap in white faced gauge cluster that are just regular now i have an 86 ta with an 85 mph speedo and an 89 formula 350 with the v.a.t.s. thing but did not come with steerig column in it but both are autos and not stick the 86 was a carb and the 89 is 350 tpi witch i plan to install later after my restoration is done but i would like to change it all over knowing that i will have no fires or other elec.problems but i want to go to a 120 or 140 speedo i am no good in elec.work and need major help in this area thank you