62/65/12 S300
#29
It doesn't matter, either one will do what you want. The only 1st Gens that would ever worry about breaking a shaft in an HX40 are ones that would be running a 14mm H/R, which rules out daily driving and towing. If you are around 400rwhp or under, you'll have no problem with a regular HX40. Like Bobby said, you'll want one with a 16cm housing though.