I just had a set of Hotchkis 1906F BB Springs installed in my 68 convert that has a 427 aluminum head and a 25.4 inch tall tire ( 205/70-14 Radial T/A ). They made the ride height perfect at 24 5/8" and 24 7/8" DR/PASS side. ( The tire pressure was at 32 but squats down quite a bit. ). I have roughly about 1" clearance above the tire to the wheel well. Everything I've purchased from Hotchkis including their subframe connectors and X-brace is of superior quality and fits the first time. This was the third set of springs I tested in the car and they finally solved my front clearance problems. Just thought I'd post these specs for future reference. Big thanks to Hotchkis for their attention to detail.