This comes with tweeters that will fit after a bit of modification to the existing housing:
The woofers and grills are a direct fit and sound great also!
Thanks. If I choose Alpine, I wanted to choose the S-series of Alpine instead of the G-series.
The Alpine site is not consistent in the presentation of the dimensions.
The tweeter of the SGP-17C:
20mms => which makes it 0,8".
The tweeter S-S65C:
Tweeter Type: 1" Wide-Range Silk Dome
Frame: 37.8 mm
Dome: 26.6 mm
Height: 17.4 mm
It looks the S65C tweater is slightly larger.
I will send Alpine an e-mail to check.