LT1's should be flat top pistons also. 1992 - 1997 B and F cars. Have to make sure it is the 5.7 in the B cars. Some of them had the 4.3L "Baby LT1". I have built engines with used pistons but if I...

Here are some fairly inexpensive pistons from Summit which will work. https://www.summitracing.com/parts/sum-17350c-00/overview/make/chevrolet When buying pistons, be careful of the compression...