if in my 89 saab 900, i replace my (factory?) jet dynamic labs 120w
jdlx sp-2384 4" front speakers, which are pointing straight up into
the glass on the front dash, with polk gxr4 4" 88w speakers,
will i notice a difference?

i cant find any info on "jet dynamic labs" with google. is it a good
company, product? in general, is 120w better than 88w? i have a sony
player that puts out 4x50w.

thanks for your opinion.