Well you should have no problem pushing a tube with the stock amp. Did you blow the speaker casue you pushed it to much or was it electrical? I know I'll catch crap for this but ... I hate things to be stock .. I have had my Exp Limited for 2 weeks and am already changing stuff. I have a ton of stereo equipment 4 x 15's 4 x 12''s 2 x 10's and about 10 amps laying around the garuage. So I was going to tupgrade the 8 with a Solo Baric 10. I took the wire feeds off the stock 8 and hooked them up to the 10 enclosure and it sounded great .. so I figured what the hell and pulled out a 15 Orion XTR and hooked it up. It sounds good! It doesn't slam like if I had hooked up one of my Orion HCCA amps to it, but hay it works . Any I don't have to wire anything. I'm not doing any compititions anymore so why bother. If I were you I'd hook the tube up to the stock amp and see if it's enough to make you happy. If your running stock front and rear speakers it should do the trick. If you need more power, buy a amp to push your tube. I would stay away with the powered tubes. If the amp goes then your sol. And they will. Not only that ,if you ever want to put somthing eles in the you'll have a amp.
Just my 2 cents
Brian