hi, all,i have a 71 chevelle , i have ordered a new top and recieved it all ready , i have never installed one ,would like to get some opinions on if i should try to install myself, like if i need special tools ,or any thing like that , and if i can,t do it my self , someone told me i had to take whole car to a custom shop and leave , does it not make sense to just bring assembly to the shop ,or does it have to be on the car for some reason , thanks all really appreciate the advice and know how,will