i have a 67' champ that has a weber SIG 8 alnico speaker in it. amp is very very bright and totally lacking anything that has to do with bass. i like a darker thicker sounding amp. i know its asking alot for an 8" speaker but is there anything out there than can handle some bass alittle better? i do have the original oxford speaker thats in perfect condition but havent even tried it in the amp and would rather keep it in good condition for resaling value. any advice?