400 motor parts

And the supplied valve springs should be compatible with the xe274.

Max Lift: .650
Coil Bind: .725
Intake Install: 135lbs @ 1.9
Exhaust Install: 135lbs @ 1.9
Closed Sear Pressure: 135lbs
Open Seat Pressure: 280lbs

Comp recommends the 911

Max Lift:0.64
Installed Height:1.9
Coil Bind Height:1.2
O.D. of Outer:1.524
I.D. of Outer:1.11
Spring Style:Single
Spring Rate:373
Seat Pressure:122
Damper:Yes

Not knowing the quality of lifters kinda sucks. Just make sure you're meticulous with the break in