I got I think a 88 or thats what the seat belts say had 2 motors in the bed one was a 9 valve head with a supercharger the other was a 6 valve head both blocks f5a im finding parts here and there to rebuild so here my problem I have no repair manual so I have no ideal about troq spec and timing and maybe some other things. I got a parts manual should of read what I was ording a little closer. truck #is db71t. Any help is greatly appeated I need it in English to thank a of yall.