The cutoff Changes every year aa they depends upon various factors like number of students given the exam, previous year cutoffs, availability of seats. If we look at cutoff data of previous year's your son can get mechanical, civil, chemical, manufacturing at Pilani Campus,  chemical, EEE, civil, mechanical, at Goa campus and ECE, civil, EEE, mechanical at Hyderabad campus

Hope it helps.

Thank you.