I need some heads for my 350 build and I am wondering what opinion you guys have of the E-street heads from Edelbrock? The basic spec of the engine will be: 350 bored .030 over Stock cast crank Scat or Eagle Rods TRW high comp (10.2:1 with 70cc heads) forged pistons Lunati Voodoo 268/276 cam So I need some heads to match up with it... I have been recommended the E-street heads, but have concerns that people have reported valve spring breakages over 5500 rpm. And I plan on taking the engine to around 6500rpm. Of course I could change the springs, but then dont know whats available to fit in the 1.25" OD seats of the Edelbrock head. Then its into more expense of matching up with retainers etc etc. Bear in mind that although the E Street heads cost you guys $900 or so in the US. For me to buy a set from my local parts guy I am looking at the equivalent of $1,386 and it doesnt work out much cheaper for me to get them shipped from the USA either by the time you add shipping, tax and duty. So what would you recommend?