Why 5.25? I put 6.5's in my 95 sonoma. If i were you, I'd put 6.5 inch woofers in the door, and tweeters in the A-pillar. I just ripped the 4 by 6's right out of the dash. The componets sound great. Anywho do what ya want but I think (know) you'd get the best imaging with tweets in the pillar...