replacing complete firewall at a pillars to floor pan. Any advise where to cut a pillar (high or low or in the middle ). Rockers are sleeved but I cant figure out if I sleeve the pillar how to attach the firewall by sliding the rocker and pillar together ,as the a pillar being at 45 degrees to the rocker angle it seems that it will be tough to slide together or do I not sleeve the a pillar,. any help would be appreciated
thanks jim