Alas, I don't know what the "T" signifies. Neither millisec nor 2cooltek list this particular HS. If this version of the PEP-66 is still intended for Slocket use, you need to do a little shroud cutting for the HS to fit vertically on a Socket 370 that's on a mainboard--as opposed to an S370 that's on a Slocket. This isn't a biggie, all that's needed are two new slots in the shroud.
The PEP-66's foot print only overhangs an S370 by a tiny amount. Without first hand knowledge of your mainboard, I can't give you a definitive answer as to "will it fit?" However, it probably does.
Please post which mobo you have. "Bx-133" is too vague.