Best money you'll spend on a 1.8 and fully built !
They even show the recipe for success that many of us followed...
-Supertech forged pistons (choice of compression ratios/bore size)
-Manley forged H-beam connecting rods
-ARP2000 Rod Bolts
-ACL Race main, rod, and thrust bearings
-ARP head studs
-ARP main studs
-Boundary Engineering "Street/Strip" oil pump with billet gears
-Supertech Viton valve seals
-Gates Racing timing belt
-OEM Mazda seals and gaskets
-Full cylinder head refresh (hot tank, new manganese/bronze valve guides, 3-angle valve job, pressure test, and resurface)
-Balanced and Blueprinted
Maximum operating RPM: 7400rpm
Maximum engine power: 600whp+
Maximum operating RPM with upgraded valvetrain: 8500rpm
Ask Andrew about their 11.75'' big brake kit, you'll need some brake too with this much power and this is one the best money can buy...
Go on their site and READ ! After do the same thing at 949racing.com, you'll thank me later on.
Easy and both of them are not far from you...