Hey everyone! New here and I was wondering the best way to keep my stock head unit and replace the speakers in my 89’ Bonneville sse. I’ve searched everywhere and when I went to replace the 6x9s got all confused because they’re bass only. So how can I keep the stock head unit and amp but just replace the 4- 3.5’* 2-5.25’* 2-6x9s?

thanks!!