also same car in early stage?     edit hah appears not with Corvette frame

2025!    

Got more curious (I'm about 15k from replacement myself) and found that Partsouq has a better price for the kit albeit with a GMB pump (no Aisin or Yamada option). Amayama has less OEM substitutions for things like idlers. Ordering from both could get you a good deal for a properly OEM kit. I priced my lot up in the ball park of $700

A Subaru dealer's parts counter will often supply a Cambelt Kit with Water pump and Thermostat pretty promptly if you don't want to wait. Pretty on par with Partsouq's individual pricing. Amayama is cheaper but you have to wait longer.    Water pumps can have up to 3 extra ports depending on application so you might want an idea of how many yours has if you are buying that part individually. 

Not so much a kit but if you bought all the bits from Amayama it would likely be much cheaper and all genuine parts. You just have to know what you're shopping for.