First small block Mopar build More than a little nervous

Whole kit lists for 545.00 now. Ive been running them in my 340 for about 5 years plus the multiple pulls on the engine dyno. They make a billet aluminum kit for right at 500.00. They may have went up but I believe i paid around 450.00 or 500.00 for the alloy steel kit around 5 years ago. Cant remember what brand or length pushrods were used, i left the hydraulic lifters and push rods up to my engine builder. Im sure they used a name brand, but couldn't say for sure

They also come in 1.5 and 1.6 ratio