I need parts!!
Second, I use Summit a lot, but I sometimes have to back into it. Searching by LT1 will give you virtually nothing. Sometimes they will have a part listed for a 96 but not a 97, although it is the same part. When they do have the part, it will be listed as fitting "Chevy small block Gen II (LT-based engines)". I usually seach as a Camaro, since the likelihood if it showing up is much higher than for a Firebird.

