Uprating Alternator Options

[Chiefton]

Does anybody here know whether the alternators from the Lexus Models RX300 or GS400 would fit my Gen 6 Celica. I need a larger one as im still struggling with voltage drop from my sound system. Trying to get a similar bolt pattern so i can litterally swap them over, or is it not that easy??

Ideally looking for a 120amp alt, this wouldnt put starin on the engine as its almost double the standard 70 amp one installed currently??

Cheers for any advice

[Chiefton]

KK makes sense to me, but i know loads of friends that get extra batteries before they upgrade alternator, so pressumed there would be a reason for this, maybe this is a quick fix solution.

If the cap "draws it's source slower than the amp as to not damage the battary", would the cap not be useless after its spent its load (for a second anyway), and the amps would then still be draining from the battery?? i got an alumpro 5farad, think thats wot its called, dont think they suppose to be rubbish, but not sure whether they got any built in protection. And i am fused to the max so no worries there.

In answer to my original question you would say its wise to upgrade the alt, then if im still dropping voltage, add another battery?? Any ideas on Lexus fittings??

Appreciate the help guys