No way... we tested the basb vs the s364.5 and the s364.5 did better in every way. I would not expect anything better out of the basb no matter what housing it had.
With that said egts are very manageable with the 238/80s and s364.5. It just runs hotter than the 205/30s. Both still tow well IMO. The 238/80s have way more power and can push past the 1300egts if you are not careful.
With the 205/30 it was hard to even get to a point where you would struggle with egts... I honestly think the tow tunes needed to be turned up just a little bit but we never got around to that. You could hold the pedal all the way to the floor in the tow tune and go up any hill and never have to worry about egts... but sometimes would not have the power you wanted.
With the 238/80s you have to be careful with the pedal because there is more power than you can use, and will spike egts and smoke if you get on it too hard. But on the same level of tow tune they have way more power than the 205/30s.
Hope that makes sense.
Here is a dyno graph comparing the BASB vs 364.5/73/.91 . Both with 205/30. You can see the s364.5 comes on sooner, makes more peak tq, makes a TON more hp, and has more power under the curve in every area. I can also tell you that towing/daily driving results were the same as the dyno. Towed cooler, cooler at WOT, more power, less smoke etc...
I think the BASB was good back in its day before the new SXE turbos came out... but it is now outdated.
