I'm trying to swap my front brakes on my 89 rx7 to four piston calipers. I've got the calipers with hard line comi g out of them but on my existing brake I have flex line all the way up. Can I splice in halfway and do half hard line half flex or can I screw the flex line direct into the caliper. Suggestions?

 

Just use the original line direct to the caliper.
That little hard line is ridiculous, I ditched it on both my conversions.